My three.js script is not running on a-frame

Question

I'm trying to make a raycaster only function when an entity is visible. I was told to try to write a script in order for this to work, so I went ahead and did such. All entities and child entities, I have interactable through click and have most of my events triggered through click, which make certain entities turn invisible as such:

<script id="city" type="text/html">
      <a-entity class="city"
        geometry="primitive: plane; height: 0.2; width: 0.5"
        data-raycastable
        material="color: black"
        text="value: ${city_name}; color: white; align: center; wrapCount: 10; font: exo2bold"
        event-set__mouseenter="scale: 1.5 1.5 1"
        event-set__mouseleave="scale: 1 1 1"
        event-set__1="_event: click; _target: #image-360; _delay: 300; material.src: ${src}"
        event-set__2="_event: click; _target: #models; _delay: 300; visible: false"
        event-set__3="_event: click; _target: #cities; _delay: 300; visible: true"
        event-set__4="_event: click; _target: #show_button; _delay: 300; visible: true"
        event-set__5="_event: click; _target: ${map}; _delay: 300; visible: true"
        proxy-event="event: click; to: #image-360; as: fade"
        sound="on: click; src: #click-sound"></a-entity>
    </script>

The data-raycastable parameter you see here is running of this here script:

AFRAME.registerComponent('data-raycastable', {
      init: function () {
        var self = this;
        var el = this.el;
        var data = this.data;

        this.eventHandlerFn = function () {
          if (el.object3D.visible = true){
          el.setAttribute('data-raycastable', '');
          }
          else {
            el.removeAttribute('data-raycastable')
          }
        }

        update: function() {

          el.addEventListener('click', this.eventHandlerFn);
          } 
          }
        }
      })

Now, I'm wondering why this script of mine doesn't work. I followed the A-frame documentation closely in an attempt to make it work, but it doesnt. The cursor button looks like this:

<a-entity id="camera" camera look-controls>
    <a-cursor
      id="cursor"
      material="color: black; shader: flat"
      position="0 0 -4.5"       
      geometry="primitive: ring; radiusInner: 0.15; radiusOuter: 0.2"
      animation__click="property: scale; startEvents: click; from: 0.1 0.1 0.1; to: 1 1 1; dur: 150"
      animation__fusing="property: fusing; startEvents: fusing; from: 1 1 1; to: 0.1 0.1 0.1; dur: 1500"
      event-set__mouseenter="_event: mouseenter; color: springgreen"
      event-set__mouseleave="_event: mouseleave; color: black"
      raycaster="objects: [data-raycastable], .link, .model">
    </a-cursor>        
  </a-entity> 

Can someone please steer me in the right direction.

Answer 1

Not sure what your component is trying to accomplish, so far it has a syntax error (missing comma after schema) and the el reference is not valid. Corrected code:

AFRAME.registerComponent('data-raycastable', {         
          schema: {
            event: {type: 'boolean', default: true}  
          },
          init: function () {
            var el = this.el;
            el.addEventListener('click', function() {
                if (el.object3D.visible = false) {
                  el.classList.remove('raycastable');
                }
                else if (el.object3D.visible = true) {
                  el.classList.add('raycastable');
                }
            })
          }  
        });

Use classes instead of data attributes for raycastability. Corrected glitch: https://glitch.com/edit/#!/aquatic-aftershave